//1.获取文本
let topDiff = -1;
let content = "";
var filename= document.getElementsByClassName('doc-title')[0].innerText;

const target = document.querySelectorAll(".reader-word-layer"); 
target.forEach(x => {
    if (x.style.top !== topDiff) {
        content += "\n";
        topDiff = x.style.top;
    };
    content += x.innerText;
}); 

//2.创建下载链接，下载到本地
var element = document.createElement('a');
 element.setAttribute('href', 'data:text/plain;charset=utf-8,' + encodeURIComponent(content));
 element.setAttribute('download', filename+".doc");
 
 element.style.display = ".reader-word-layer";
 document.body.appendChild(element);
 
 element.click();
 
 document.body.removeChild(element);